I have a Gamo Shadow 100 .177 cal break open air rifle. It seems to like the heavier pellets such as the Game Rocket 8. something grains. I was just wondering if maybe the heavier pellets like the PSB Exact or Diablo 10.3 grains pellets would be even more accurate or even worth my while. What do you guys think of Heavy .177 cal pellets.. Targets, plinking and hunting.